1. Product Overview
SS 316L welding electrodes are ultra-low carbon austenitic stainless steel welding materials. The core model ER316L-16, with its precise chemical composition ratio and excellent process compatibility, solves the problem of traditional stainless steel electrodes being prone to failure under harsh conditions such as strong corrosion and high temperatures. It is widely used in key fields including chemical engineering, electric power, and marine engineering, and is suitable for welding mainstream 316L series stainless steels such as AISI316L and SUS316L.
2. Core Features
2.1 Excellent Corrosion Resistance
Composition Advantage: The deposited metal contains 17%-20% Cr, 11%-14% Ni, 2.0%-3.0% Mo, and the carbon content is ≤0.04%. It forms a stable austenitic structure, which can effectively resist corrosion from acetic acid, sulfuric acid, phosphoric acid, and salt-containing media. Meanwhile, it has excellent high-temperature crack resistance, avoiding the risk of intergranular corrosion after welding.
Performance Comparison: Its corrosion resistance is superior to conventional stainless steel electrodes such as CHM-316 and CHG-316, making it especially suitable for welding chromium stainless steel, clad steel, and special steel that cannot be heat-treated after welding.
2.2 Flexible Process Compatibility
Current Compatibility: Supports both alternating current (AC) and direct current (DC) welding modes, eliminating the need for equipment replacement to meet the requirements of different scenarios.
All-Position Welding: Applicable for flat welding, vertical welding, and overhead welding. It features stable arc, low spatter, and beautiful weld formation, reducing the difficulty of welding complex structures.
Parameter Reference: The recommended shielding gas is Ar + (1%-3%) O₂ with a flow rate of 20-25L/min; the stick-out length is 15-25mm to ensure consistent welding quality.
2.3 Strict Quality Control
Full-Process Inspection: Raw material screening → in-production monitoring → outgoing performance testing. Three-level quality control eliminates quality risks.
Standard Compliance: The chemical composition and mechanical properties of the deposited metal meet AWS standards, and inspection reports are available for each batch of products.
3. Deposited Metal Chemical Composition (%)
| Chemical Element | C | Mn | Si | S | P | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| Test Value | ≤0.04 | ≤0.5-2.5 | ≤0.9 | ≤0.03 | ≤0.04 | 17-20 | 11-14 | 2.0-3.0 |
4. Compatible Welding Processes
4.1 Shielded Metal Arc Welding (SMAW) - First Choice for Complex Scenarios
Application Scenarios
On-site construction, welding of pipe elbows/irregular parts, and field operations. The equipment is simple and flexible, without the need for complex gas protection systems.
Core Parameters
| Electrode Diameter (mm) | Recommended Current (A) | Arc Voltage (V) | Electrode Movement Method | Interpass Temperature (℃) |
|---|---|---|---|---|
| 2.5 | 60-80 | 18-22 | Sawtooth/crescent shape | ≤150 |
| 3.2 | 80-110 | 18-22 | Straight back-and-forth (vertical/overhead welding) | ≤150 |
| 4.0 | 110-140 | 18-22 | Multi-layer multi-pass welding with slag removal | ≤150 |
Operation Points
Pre-welding Cleaning: Grind the rust and oil on the groove and the 20mm area on both sides, and wipe with acetone to remove moisture to prevent hydrogen-induced cracks.
Outdoor Protection: Set up a wind shield when the wind speed exceeds 1.5m/s to avoid porosity; the electrodes should be dried at 150-200℃ for 1-2 hours and stored in an insulation drum at 80-100℃.
4.2 Gas Tungsten Arc Welding (GTAW/TIG) - For High-Precision Welding
Application Scenarios
Thin-walled parts (chemical pipelines, food containers) and scenarios requiring high-precision welds, ensuring weld purity and corrosion resistance.
Core Parameters
| Workpiece Thickness (mm) | Tungsten Electrode Diameter (mm) | Welding Current (A) | Shielding Gas Flow (L/min) | Welding Speed (mm/min) |
|---|---|---|---|---|
| ≤2 | 1.6-2.0 | 30-60 | 8-12 (Pure Ar) | 50-80 |
| 3-5 | 2.4-3.2 | 60-100 | 8-12 (Ar + 1%-3% O₂) | 60-100 |
Operation Points
Back Protection: For full-penetration joints, argon should be supplied to the back (5-8L/min) to prevent oxidation of the weld back.
Filler Wire Requirements: Use ER316L filler wire (1.2-2.0mm) and add it from the front of the molten pool, avoiding insertion into the arc area.
4.3 Metal Inert Gas Welding (MIG/MAG) - For Efficient Mass Welding
Application Scenarios
Mass production of medium-thick plates (pressure vessels, offshore platforms). It features large penetration depth and high efficiency, shortening the construction cycle.
Core Parameters
| Filler Wire Diameter (mm) | Welding Current (A) | Arc Voltage (V) | Shielding Gas (MAG) | Gas Flow (L/min) |
|---|---|---|---|---|
| 1.2 | 180-220 | 24-26 | Ar + 15% CO₂ | 20-25 |
| 1.6 | 240-280 | 26-28 | Ar + 15% CO₂ | 20-25 |
Operation Points
Transfer Mode: Short-circuit transfer for thin plates and globular transfer for thick plates; the width of multi-layer welds should be ≤5 times the diameter of the filler wire to avoid stress concentration.
Nozzle Maintenance: Regularly clean spatter to prevent blockage from affecting the gas protection effect.
5. Application Fields
| Industry Field | Specific Application Scenarios | Core Demand Matching |
|---|---|---|
| Chemical Engineering | Welding of urea production equipment and synthetic fiber manufacturing devices | Strong corrosion resistance, stable weld corrosion resistance |
| Electric Power Engineering | Welding of power pipelines and pressure vessels | High-temperature crack resistance, structural strength |
| Marine Engineering | Welding of offshore platform supports and ship stainless steel components | Salt spray corrosion resistance, fatigue resistance |
| Food Processing | Welding of food-grade containers and conveying pipelines | Weld purity, no harmful substance precipitation |
6. Procurement & Services
6.1 Supply Capacity
Production Capacity: 50 tons/day, supporting large-volume orders.
Delivery Cycle: Within 25 days after order confirmation (adjustable according to order quantity).
Shipping Ports: Shanghai, Ningbo, Yiwu (selectable as needed).
6.2 Packaging Specifications
| Packaging Level | Specification Details | Purpose |
|---|---|---|
| Inner Packaging | 5kg/plastic box | Moisture-proof, protecting electrode coating |
| Middle Packaging | 4 inner boxes/carton (20kg total) | Easy storage and counting |
| Outer Packaging | 50 cartons/pallet | Suitable for long-distance transportation, anti-collision |
6.3 Customer Support
Sample Service: Free samples provided, freight collect.
Customization Service: OEM packaging supported, with brand logos and process parameter prompts printable.
Technical Support: Provide guidance on welding parameter adjustment and assist in solving on-site process problems.
After-Sales Guarantee: Backed by Alibaba Trade Assurance, ensuring payment security and on-time delivery, with 100% guarantee amount refundable.
7. Why Choose Us?
Experience Accumulation: 25 years of experience in welding material production and export, mature technology, and familiar with global export procedures.
Quality Priority: Traceable raw material control, full-process three-level inspection, and products meeting international standards.
Efficient Response: Expanded production lines to increase capacity, with fast delivery within 25 days to meet urgent order needs.
Cost-Effectiveness: High-quality performance combined with reasonable pricing, popular in the global market with positive customer feedback.
Contact Information:
Official Website: www.hzdayang.com
Alibaba Store: hzdayang.en.alibaba.com
Hot Tags: ss 316l welding electrode, China, manufacturers, suppliers, factory, company, wholesale, discount, buy, low price, high quality, products